WO2016090905A1 - 下行参考信号的调整方法、装置及存储介质 - Google Patents

下行参考信号的调整方法、装置及存储介质 Download PDF

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Publication number
WO2016090905A1
WO2016090905A1 PCT/CN2015/083032 CN2015083032W WO2016090905A1 WO 2016090905 A1 WO2016090905 A1 WO 2016090905A1 CN 2015083032 W CN2015083032 W CN 2015083032W WO 2016090905 A1 WO2016090905 A1 WO 2016090905A1
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Prior art keywords
reference signal
downlink reference
channel quality
downlink
set threshold
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PCT/CN2015/083032
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English (en)
French (fr)
Inventor
阮松
佘远俊
梁煜
张丽伟
孙超
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深圳市中兴微电子技术有限公司
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Publication of WO2016090905A1 publication Critical patent/WO2016090905A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received

Definitions

  • the present invention relates to the field of signal transmission technologies, and in particular, to a method, an apparatus, and a storage medium for adjusting a downlink reference signal.
  • the Long Term Evolution (LTE) system uses the reference signal to provide channel estimation for the terminal, and the insertion density of the reference signal on the subcarrier is directly related to the channel estimation performance of the terminal.
  • the 3GPP 36.211 protocol gives an insertion format of a reference signal when the antenna ports are 1, 2, and 4, but the insertion format of the reference signal is fixed and cannot be performed according to the channel environment in which the access terminal is located. Adjustment, in the case of a good channel environment, the utilization of frequency resources cannot be improved; and in the case of poor channel environment, the signal reception quality of the terminal cannot be guaranteed.
  • the embodiment of the present invention is to provide a method, a device, and a storage medium for adjusting a downlink reference signal, which can at least solve the problem of low frequency resource utilization of the existing LTE system.
  • An embodiment of the present invention provides a method for adjusting a downlink reference signal, where the method includes:
  • the downlink reference signal is set according to the comparison result.
  • the method further includes: setting a channel quality upper limit value corresponding to the set threshold and a channel quality lower limit value corresponding to the set threshold;
  • the comparing the obtained downlink channel quality with a set threshold to obtain a comparison result includes:
  • the downlink reference signal needs to be adjusted.
  • the setting of the downlink reference signal according to the comparison result includes:
  • the comparison result is that the downlink reference signal needs to be adjusted, setting a density value of the downlink reference signal according to the downlink channel quality and the set threshold; and when the downlink channel quality is higher than the channel quality corresponding to the set threshold
  • the set density value of the current downlink reference signal is decreased; when the downlink channel quality is lower than the channel quality lower limit value corresponding to the set threshold, the set density value of the current downlink reference signal is increased;
  • the set density value of the modified downlink reference signal is sent to the terminal by using a specified message.
  • the specified message further carries an activation time of the set density value of the downlink reference signal
  • the setting, according to the comparison result, the downlink reference signal comprises: adjusting a density of the downlink reference signal according to an enable time of the set density value of the downlink reference signal in the specified message.
  • An embodiment of the present invention further provides a method for adjusting a downlink reference signal, where the method includes:
  • Receiving a specified message sent by the base station parsing a set density value of the downlink reference signal from the specified message, and setting a format of the received data according to the set density value of the downlink reference signal.
  • the setting the receiving number according to the set density value of the downlink reference signal includes:
  • An embodiment of the present invention further provides an apparatus for adjusting a downlink reference signal, where the apparatus includes:
  • a bit error rate monitoring unit configured to obtain a bit error rate of the data received by the terminal
  • a downlink channel quality acquiring unit configured to obtain a downlink channel quality according to the obtained error rate
  • a comparing unit configured to compare the obtained downlink channel quality with a set threshold to obtain a comparison result
  • the first downlink reference signal setting unit is configured to set the downlink reference signal according to the comparison result.
  • the comparing unit comprises:
  • a setting module configured to set a channel quality upper limit value corresponding to the set threshold and a channel quality lower limit value corresponding to the set threshold
  • the comparing module is configured to compare the downlink channel quality with a set threshold, if the downlink channel quality is higher than a channel quality upper limit corresponding to the set threshold, or the downlink channel quality is lower than the setting When the channel quality lower limit corresponding to the threshold is determined, the downlink reference signal needs to be adjusted.
  • the first downlink reference signal setting unit includes:
  • a downlink reference signal setting module configured to: when the comparison result is that the downlink reference signal needs to be adjusted, set a density value of the downlink reference signal according to the downlink channel quality and the set threshold; when the downlink channel quality is higher than the When the channel quality upper limit value corresponding to the threshold is set, the set density value of the current downlink reference signal is decreased; when the downlink channel quality is lower than the channel quality lower limit value corresponding to the set threshold, the current downlink reference is improved.
  • the set density value of the signal after that, the set density value of the modified downlink reference signal is sent to the terminal by using a specified message.
  • the first downlink reference signal setting unit is further configured to adjust a density of transmitting the downlink reference signal according to an enable time of the set density value of the downlink reference signal in the specified message.
  • An embodiment of the present invention further provides an apparatus for adjusting a downlink reference signal, where the apparatus includes:
  • a bit error rate sending unit configured to send a bit error rate of the received data to the base station, where the bit error rate is used by the base station to acquire the downlink channel quality
  • the second downlink reference signal setting unit is configured to receive the specified message sent by the base station, parse the set density value of the downlink reference signal from the specified message, and set according to the set density value of the downlink reference signal The format of the received data.
  • the second downlink reference signal setting unit is further configured to adjust a density of the received downlink reference signal according to an activation time of the set density value of the downlink reference signal carried in the specified message.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program for performing a method for adjusting a downlink reference signal according to an embodiment of the present invention.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program for performing a method for adjusting a downlink reference signal according to an embodiment of the present invention.
  • the method, device, and storage medium for adjusting the downlink reference signal provided by the embodiment of the present invention detect the error rate of the data received by the terminal by detecting the error rate of the data received by the terminal, and obtain the downlink channel quality according to the detected error rate, and And comparing the downlink channel quality with the set threshold. When the downlink channel quality exceeds the set threshold, the setting of the downlink reference signal is modified correspondingly, so that the insertion density of the downlink reference signal changes, thereby implementing system frequency resources. Effective use.
  • FIG. 1 is a schematic flowchart of an implementation method of adjusting a downlink reference signal according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic flowchart of implementing a method for adjusting a downlink reference signal according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic structural diagram of a structure of an apparatus for adjusting a downlink reference signal according to Embodiment 3 of the present invention.
  • FIG. 4 is a schematic structural diagram of a device for adjusting a downlink reference signal according to Embodiment 4 of the present invention.
  • FIG. 5 is a schematic flowchart of implementing an adjustment method of a downlink reference signal according to Embodiment 5 of the present invention.
  • the embodiment provides a method for adjusting the downlink reference signal. As shown in FIG. 1 , the method in this embodiment includes the following steps:
  • Step S101 Acquire a bit error rate of the data received by the terminal
  • the base station After the base station sends data to the terminal, it receives relevant data sent by the terminal, including the error rate of the data received by the terminal.
  • the error rate is an indicator for measuring the accuracy of data transmission within a specified time.
  • the bit error rate error in transmission / total number of codes transmitted ⁇ 100%
  • the bit error rate is related to the density of the downlink reference signal of the current base station and the terminal, and is also related to the current network signal transmission environment.
  • Step S102 Obtain a downlink channel quality according to the obtained error rate.
  • the bit error rate can reflect whether the density of the downlink reference signal of the current base station and the terminal is appropriate, and can also reflect the current network signal transmission environment. Therefore, according to the direct correlation between the bit error rate and the downlink channel quality, the error rate can be passed.
  • the bit error rate is obtained by the downlink channel quality. How to obtain the downlink channel quality by the bit error rate belongs to the prior art, and is not described here.
  • Step S103 Comparing the downlink channel quality with a set threshold to obtain a comparison result
  • the preset threshold is set according to the current downlink channel quality as a percentage of the downlink channel quality in the ideal case, and is used to reflect the quality of the downlink channel, and the preset threshold includes two. One is to set a channel quality upper limit corresponding to the threshold, and the other is to set a channel quality lower limit corresponding to the threshold; wherein the channel quality upper limit is used to indicate that the current network signal transmission environment is good, and the downlink reference signal density can be reduced.
  • the channel quality upper limit value can be set to 80%; correspondingly, the channel quality lower limit value indicates that the current network signal transmission environment is not good enough, in order to ensure data transmission quality and reduce the bit error rate, the downlink reference signal density can be increased, for example, :
  • the channel quality upper limit can be set to 50%.
  • the density of the downlink reference signal needs to be reduced; the downlink channel quality is lower than When the channel quality lower limit value corresponding to the threshold is set, the density of the downlink reference signal needs to be increased; if the downlink channel quality is in the channel quality upper limit value corresponding to the set threshold, corresponding to the set threshold between the channel quality lower limit values, that is, the downlink channel quality is not higher than the channel quality upper limit value corresponding to the set threshold value, and is not lower than the channel quality lower limit value corresponding to the set threshold value, The density of the downstream reference signal needs to be adjusted.
  • Step S104 Determine a method for adjusting the downlink reference signal according to the comparison result.
  • the comparison result may be that the density of the downlink reference signal needs to be adjusted, or the density of the downlink reference signal does not need to be adjusted; wherein the density of the downlink reference signal needs to be adjusted, including reducing the density of the downlink reference signal, or increasing the density of the downlink reference signal.
  • the insertion format of the downlink reference signal is modified, and then the data is transmitted.
  • the density value of the downlink reference signal is set according to the downlink channel quality and the set threshold, and the density value is set to be multiplied based on the lowest density of the downlink reference signal. Or reducing the density of the current downlink reference signal; when the downlink channel quality is higher than the channel quality upper limit value corresponding to the set threshold, reducing the set density value of the current downlink reference signal; when the downlink channel quality is When the channel quality lower limit value corresponding to the set threshold is lower, the set density value of the current downlink reference signal is increased;
  • Step S105 Send the determined adjustment manner of the downlink reference signal to the end by specifying the message. end;
  • the set density value of the modified downlink reference signal is sent to the terminal by specifying a message.
  • the specified message further includes an activation time of the set density value of the downlink reference signal.
  • the setting, according to the comparison result, the downlink reference signal includes: according to the specified message The enable time of the set density value of the downlink reference signal adjusts the density of the transmitted downlink reference signal.
  • the method of the embodiment can detect the status of the data received by the terminal by detecting the error rate of the data received by the terminal, and adjust the setting of the downlink reference signal according to the obtained comparison between the downlink channel quality and the set threshold, so that the insertion density of the downlink reference signal is Changes occur to achieve efficient use of system frequency resources.
  • This embodiment provides a method for adjusting a downlink reference signal. As shown in FIG. 2, the method in this embodiment includes:
  • Step S201 Send a bit error rate of the received data to the base station, where the error rate is used by the base station to acquire the downlink channel quality.
  • the data received by the terminal receiving the base station may have different data reception errors due to different transmission environments, and is usually represented by the error rate of the data, and the base station can obtain the downlink channel quality through the error rate of the terminal.
  • Step S202 Receive a specified message sent by the base station, parse a set density value of the downlink reference signal from the specified message, and set a format of the received data according to the set density value of the downlink reference signal.
  • the base station determines to adjust the downlink reference signal according to the downlink channel quality, then the base The station will send a specified message to the terminal, and the specified message includes the set density value of the modified downlink reference signal.
  • the base station needs to inform the terminal when to enable the modified downlink reference signal, which is to enable the time. And being carried in the specified message, and correspondingly, the terminal adjusts the density of the received downlink reference signal according to an activation time of the set density value of the downlink reference signal carried in the specified message.
  • This embodiment is a device for adjusting a downlink reference signal, which is proposed on the basis of the method of Embodiment 1. As shown in FIG. 3, the device in this embodiment includes:
  • the error rate monitoring unit 301 is configured to acquire a bit error rate of the data received by the terminal;
  • the base station After the base station sends data to the terminal, it receives relevant data sent by the terminal, including the error rate of the data received by the terminal, and the error rate is an indicator for measuring the accuracy of data transmission within a specified time.
  • the bit error rate error in transmission / total number of codes transmitted ⁇ 100%.
  • the bit error rate is related to the density of the downlink reference signals of the current base station and the terminal, and is also related to the current network signal transmission environment.
  • the downlink channel quality obtaining unit 302 is configured to obtain a downlink channel quality according to the obtained error rate
  • the bit error rate can reflect whether the density of the downlink reference signal of the current base station and the terminal is appropriate, and can also reflect the current network signal transmission environment. Therefore, according to the direct correlation between the bit error rate and the downlink channel quality, the error rate can be passed. The bit error rate yields the downlink channel quality.
  • the comparing unit 303 is configured to compare the obtained downlink channel quality with a set threshold to obtain a comparison result
  • the threshold is set here to reflect the quality of the downlink channel.
  • the preset threshold includes two, one is the channel quality upper limit corresponding to the set threshold, and the other is the letter corresponding to the set threshold.
  • the channel quality upper limit value wherein the channel quality upper limit value is used to indicate that the current network signal transmission environment is good, and the downlink reference signal density can be reduced, for example, the channel quality upper limit value can be set to 80%; correspondingly, under channel quality
  • the limit indicates that the current network signal transmission environment is not good enough.
  • the downlink reference signal density can be increased.
  • the channel quality upper limit value can be set to 50%.
  • the first downlink reference signal setting unit 304 is configured to set the downlink reference signal according to the obtained comparison result.
  • the comparison result may be that the density of the downlink reference signal needs to be adjusted, or the density of the downlink reference signal does not need to be adjusted; wherein the density of the downlink reference signal needs to be adjusted, including reducing the density of the downlink reference signal, or increasing the downlink reference signal. density.
  • the insertion format of the downlink reference signal is modified, and then the data is transmitted.
  • the comparing unit 303 includes:
  • a setting module configured to set a channel quality upper limit value corresponding to the set threshold and a channel quality lower limit value corresponding to the set threshold
  • the comparing module is configured to compare the downlink channel quality with a set threshold, if the downlink channel quality is higher than a channel quality upper limit corresponding to the set threshold, or the downlink channel quality is lower than the setting When the channel quality lower limit corresponding to the threshold is determined, the downlink reference signal needs to be adjusted.
  • the first downlink reference signal setting unit 304 includes:
  • a downlink reference signal setting module configured to: when the comparison result is that the downlink reference signal needs to be adjusted, set a density value of the downlink reference signal according to the downlink channel quality and the set threshold; when the downlink channel quality is higher than the When the channel quality upper limit value corresponding to the threshold is set, the set density value of the current downlink reference signal needs to be decreased; when the downlink channel quality is lower than the channel quality lower limit value corresponding to the set threshold, The set density value of the current downlink reference signal is increased; after that, the set density value of the downlink reference signal is sent to the terminal by using a specified message.
  • the downlink channel quality is between the channel quality upper limit value corresponding to the set threshold and the channel quality lower limit value corresponding to the set threshold, that is, the downlink channel quality is not higher than the set threshold. If the corresponding channel quality upper limit value is not lower than the channel quality lower limit value corresponding to the set threshold, it is not necessary to adjust the density of the downlink reference signal.
  • the first downlink reference signal setting unit 304 is further configured to adjust, according to an activation time of the set density value of the downlink reference signal in the specified message, a density of the downlink reference signal to be transmitted.
  • the error rate monitoring unit 301, the downlink channel quality acquiring unit 302, the comparing unit 303, and the first downlink reference signal setting unit 304 in this embodiment may all be configured by a central processing unit (CPU) located at the base station.
  • CPU central processing unit
  • MPU Processor
  • DSP digital signal processor
  • FPGA field programmable gate array
  • This embodiment is a downlink reference signal adjustment apparatus proposed on the basis of Embodiment 2. As shown in FIG. 4, the apparatus of this embodiment includes:
  • the bit error rate sending unit 401 is configured to send a bit error rate of the received data to the base station, where the bit error rate is used by the base station to acquire the downlink channel quality.
  • the data received by the terminal receiving the base station may have different data reception errors due to different transmission environments, and is usually represented by the error rate of the data, and the base station can obtain the downlink channel quality through the error rate of the terminal.
  • the second downlink reference signal setting unit 402 is configured to receive the specified message sent by the base station, and parse the set density value of the downlink reference signal from the specified message, according to the set density value of the downlink reference signal. The format of the received data.
  • the base station determines to adjust the downlink reference signal according to the downlink channel quality, the base station A specified message is sent to the terminal, and the specified message includes the set density value of the modified downlink reference signal.
  • the base station needs to inform the terminal when to enable the modified downlink reference signal, which is to enable the time. Carry in the specified message. Therefore, the second downlink reference signal setting unit 402 is further configured to adjust the density of the received downlink reference signal according to an activation time of the set density value of the downlink reference signal carried in the specified message.
  • the error rate sending unit 401 and the second downlink reference signal setting unit 402 in this embodiment may be implemented by a CPU, an MPU, a DSP, or an FPGA located in the terminal.
  • Step S501 The terminal sends the error rate of the received data to the base station, where the error rate is used by the base station to acquire the downlink channel quality.
  • the data received by the terminal receiving the base station may have different data reception errors due to different transmission environments, and is usually represented by the error rate of the data.
  • the base station can obtain the downlink channel quality through the error rate of the terminal.
  • Step S502 The base station acquires a bit error rate of the data received by the terminal, and obtains a downlink channel quality according to the obtained error rate.
  • the bit error rate is related to the density of the downlink reference signals of the current base station and the terminal, and is also related to the current network signal transmission environment.
  • Step S503 The base station compares the obtained downlink channel quality with a set threshold to obtain a comparison result, and sets a downlink reference signal according to the comparison result.
  • the threshold is set here to reflect the quality of the downlink channel.
  • the preset threshold includes two, one is the channel quality upper limit corresponding to the set threshold, and the other is the letter corresponding to the set threshold.
  • the channel quality upper limit value wherein the channel quality upper limit value is used to indicate that the current network signal transmission environment is good, and the downlink reference signal density can be reduced; accordingly, the channel quality lower limit value indicates that the current network signal transmission environment is not good enough, in order to ensure Data transmission quality, reducing bit error rate, can increase the downlink reference signal density.
  • the insertion format of the downlink reference signal is modified, and then data is transmitted.
  • the density of the downlink reference signal needs to be reduced; the downlink channel quality is lower than When the channel quality lower limit value corresponding to the threshold is set, the density of the downlink reference signal needs to be increased; if the downlink channel quality is in the channel quality upper limit value corresponding to the set threshold, corresponding to the set threshold between the channel quality lower limit values, that is, the downlink channel quality is not higher than the channel quality upper limit value corresponding to the set threshold value, and is not lower than the channel quality lower limit value corresponding to the set threshold value, The density of the downstream reference signal needs to be adjusted.
  • the comparison result may be that the density of the downlink reference signal needs to be adjusted, or the density of the downlink reference signal does not need to be adjusted; wherein the density of the downlink reference signal needs to be adjusted, including reducing the density of the downlink reference signal, or increasing the density of the downlink reference signal.
  • the insertion format of the downlink reference signal is modified, and then the data is transmitted.
  • the comparison result is that the downlink reference signal needs to be adjusted, setting a density value of the downlink reference signal according to the downlink channel quality and the set threshold; and when the downlink channel quality is higher than the channel quality upper limit corresponding to the set threshold When the value is lower, the set density value of the current downlink reference signal is decreased; when the downlink channel quality is lower than the channel quality lower limit value corresponding to the set threshold, the set density value of the current downlink reference signal is increased;
  • the set density value of the modified downlink reference signal is sent to the terminal by using a specified message.
  • the specified message further includes an activation time of the set density value of the downlink reference signal.
  • the setting, according to the comparison result, the downlink reference signal includes: according to the specified message The enable time of the set density value of the downlink reference signal adjusts the density of the transmitted downlink reference signal.
  • Step S504 The terminal receives the designated message sent by the base station, parses the set density value of the downlink reference signal from the specified message, and sets the format of the received data according to the set density value of the downlink reference signal.
  • the specified message includes a paging message, a system message, and a Radio Resource Control (RRC) reconfiguration message.
  • the paging message and the system message are used to notify the terminal in the service; the RRC reconfiguration message is used to notify the terminal in the service.
  • the base station determines to adjust the downlink reference signal according to the downlink channel quality, the base station sends a designation message to the terminal, where the specified message includes the set density value of the modified downlink reference signal. In order to avoid misinterpreting the modified data of the downlink reference signal as erroneous data, it is necessary to make corresponding adjustments to the format of the data received by the terminal.
  • the base station needs to inform the terminal when the modified downlink reference signal is enabled, and the activation time is carried in the specified message, and correspondingly, the terminal according to the set density value of the downlink reference signal carried in the specified message. Enable time adjustment to receive the density of the downstream reference signal.
  • Each unit and module in the apparatus for adjusting the downlink reference signal proposed in the embodiment of the present invention may be implemented by a processor, or may be implemented by a specific logic circuit; wherein the processor may be a mobile terminal or a server.
  • the processor can be Central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA).
  • the method for adjusting the downlink reference signal is implemented in the form of a software function module and sold or used as a standalone product, it may also be stored in a computer readable storage medium.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program is used to perform the method for adjusting the downlink reference signal according to the embodiment of the present invention.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is used to perform the method for adjusting the downlink reference signal according to the embodiment of the present invention.

Abstract

本发明公开了一种下行参考信号的调整方法,包括获取终端接收数据的误码率;根据获得的所述误码率得到下行信道质量;将得到的所述下行信道质量和设定阈值进行比较得到比较结果;根据所述比较结果对下行参考信号进行设置。本发明还同时公开了下行参考信号的调整装置及存储介质。

Description

下行参考信号的调整方法、装置及存储介质 技术领域
本发明涉及信号传输技术领域,尤其涉及下行参考信号的调整方法、装置及存储介质。
背景技术
长期演进(Long Term Evolution,LTE)系统使用参考信号为终端提供信道估计,参考信号在子载波上的插入密度直接关系到终端的信道估计性能。3GPP 36.211协议给出了天线端口为1个、2个和4个时的一种参考信号的插入格式,但这种参考信号的插入格式是固定的,不能根据接入终端所处的信道环境进行调节,在信道环境较好的情况下,不能提高频率资源的利用率;而在信道环境较差的情况下,无法保证终端的信号接收质量。
发明内容
有鉴于此,本发明实施例期望提供下行参考信号的调整方法、装置及存储介质,至少能解决现有LTE系统频率资源利用率低等不足。
本发明实施例的技术方案是这样实现的:
本发明实施例提供了一种下行参考信号的调整方法,所述方法包括:
获取终端接收数据的误码率;
根据获得的所述误码率得到下行信道质量;
将得到的所述下行信道质量和设定阈值进行比较得到比较结果;
根据所述比较结果对下行参考信号进行设置。
在一实施例中,所述方法还包括:设置所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值;
所述将得到的所述下行信道质量和设定阈值进行比较得到比较结果包括:
将所述下行信道质量和设定阈值进行比较,若所述下行信道质量高于所述设定阈值对应的信道质量上限值,或所述下行信道质量低于所述设定阈值对应的信道质量下限值时,需要对下行参考信号进行调整。
在一实施例中,所述根据所述比较结果对下行参考信号进行设置包括:
若所述比较结果为需要对下行参考信号进行调整,则根据下行信道质量和设定阈值对下行参考信号的密度值进行设置;当所述下行信道质量高于所述设定阈值对应的信道质量上限值时,降低当前下行参考信号的设定密度值;当所述下行信道质量低于所述设定阈值对应的信道质量下限值时,提高当前下行参考信号的设定密度值;
之后,通过指定消息将修改后的下行参考信号的设定密度值发送给终端。
在一实施例中,所述指定消息中还携带有所述下行参考信号的设定密度值的启用时间;
所述根据所述比较结果对下行参考信号进行设置包括:根据所述指定消息中所述下行参考信号的设定密度值的启用时间调整发送下行参考信号的密度。
本发明实施例又提供了一种下行参考信号的调整方法,所述方法包括:
将接收数据的误码率发送给基站,所述误码率用于基站获取下行信道质量;
接收所述基站发来的指定消息,从所述指定消息中解析出下行参考信号的设定密度值,根据所述下行参考信号的设定密度值设定接收数据的格式。
在一实施例中,所述根据所述下行参考信号的设定密度值设定接收数 据的格式包括:
根据所述指定消息中携带的所述下行参考信号的设定密度值的启用时间调整接收下行参考信号的密度。
本发明实施例又提供了一种下行参考信号的调整装置,所述装置包括:
误码率监测单元,配置为获取终端接收数据的误码率;
下行信道质量获取单元,配置为根据获得的所述误码率得到下行信道质量;
比较单元,配置为将得到的所述下行信道质量和设定阈值进行比较得到比较结果;
第一下行参考信号设置单元,配置为根据所述比较结果对下行参考信号进行设置。
在一实施例中,所述比较单元包括:
设置模块,配置为设置所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值;
比较模块,配置为将所述下行信道质量和设定阈值进行比较,若所述下行信道质量高于所述设定阈值对应的信道质量上限值,或所述下行信道质量低于所述设定阈值对应的信道质量下限值时,需要下行参考信号进行调整。
在一实施例中,所述第一下行参考信号设置单元包括:
下行参考信号设置模块,配置为在所述比较结果为需要对下行参考信号进行调整时,根据下行信道质量和设定阈值对下行参考信号的密度值进行设置;当所述下行信道质量高于所述设定阈值对应的信道质量上限值时,降低当前下行参考信号的设定密度值;当所述下行信道质量低于所述设定阈值对应的信道质量下限值时,提高当前下行参考信号的设定密度值;之后,通过指定消息将修改后的下行参考信号的设定密度值发送给终端。
在一实施例中,所述第一下行参考信号设置单元,还配置为根据所述指定消息中所述下行参考信号的设定密度值的启用时间调整发送下行参考信号的密度。
本发明实施例又提供了一种下行参考信号的调整装置,所述装置包括:
误码率发送单元,配置为将接收数据的误码率发送给基站,所述误码率用于基站获取下行信道质量;
第二下行参考信号设置单元,配置为接收所述基站发来的指定消息,从所述指定消息中解析出下行参考信号的设定密度值,根据所述下行参考信号的设定密度值设定接收数据的格式。
在一实施例中,所述第二下行参考信号设置单元,还配置为根据所述指定消息中携带的所述下行参考信号的设定密度值的启用时间调整接收下行参考信号的密度。
本发明实施例还提供了一种计算机存储介质,所述计算机存储介质存储有计算机程序,该计算机程序用于执行本发明实施例的下行参考信号的调整方法。
本发明实施例还提供了一种计算机存储介质,所述计算机存储介质存储有计算机程序,该计算机程序用于执行本发明实施例的下行参考信号的调整方法。
本发明实施例所提供的下行参考信号的调整方法、装置及存储介质,通过检测终端接收数据的误码率,及时了解终端接收数据的状况;根据检测到的误码率得到下行信道质量,并将所述下行信道质量和设定阈值进行比较,当下行信道质量超出设定阈值的范围时,对应修改下行参考信号的设置,使得下行参考信号的插入密度发生变化,从而实现了对系统频率资源的有效利用。
附图说明
图1为本发明实施例1下行参考信号的调整方法的实现流程示意图;
图2为本发明实施例2下行参考信号的调整方法的实现流程示意图;
图3为本发明实施例3下行参考信号的调整装置的组成结构示意图;
图4为本发明实施例4下行参考信号的调整装置的组成结构示意图;
图5为本发明实施例5下行参考信号的调整方法的实现流程示意图。
具体实施方式
以下结合说明书附图及实施例对本发明的技术方案做详细阐述。
实施例1
为了解决现有LTE系统频率资源利用率低等不足,本实施例提供了一种下行参考信号的调整方法,如图1所示,本实施例方法包括以下步骤:
步骤S101:获取终端接收数据的误码率;
基站向终端下发数据后,会收到终端发来的相关数据,其中就包括终端接收数据的误码率,误码率是衡量数据在规定时间内数据传输精确性的指标。通常,误码率=传输中的误码/所传输的总码数×100%,误码率与当前基站和终端的下行参考信号的密度有关,也与当前的网络信号传输环境有关。
步骤S102:根据获得的误码率得到下行信道质量;
这里,误码率能够反映当前基站和终端的下行参考信号的密度是否合适,也能反映当前网络信号传输环境的好坏,因此,根据误码率和下行信道质量的直接相关性,就能通过误码率得到下行信道质量;如何通过误码率得到下行信道质量属于现有技术,此处不再赘述。
步骤S103:将所述下行信道质量和设定阈值进行比较得到比较结果;
此处设定阈值根据当前下行信道质量占理想情况下的下行信道质量的百分比来设置,用于反映下行信道的质量情况,预先设置的阈值包括两个, 一个是设定阈值对应的信道质量上限值,一个是设定阈值对应的信道质量下限值;其中,信道质量上限值用来表示当前网络信号传输环境很好,可以降低下行参考信号密度,比如:信道质量上限值可以设为80%;相应地,信道质量下限值表示当前网络信号传输环境不够好,为了保证数据传输质量,减少误码率,可以增加下行参考信号密度,比如:信道质量上限值可以设为50%。
将所述下行信道质量和设定阈值进行比较,若所述下行信道质量高于所述设定阈值对应的信道质量上限值,则需要降低下行参考信号的密度;所述下行信道质量低于所述设定阈值对应的信道质量下限值时,则需要提高下行参考信号的密度;若所述下行信道质量处于所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值之间,即:所述下行信道质量不高于所述设定阈值对应的信道质量上限值、也不低于所述设定阈值对应的信道质量下限值,则不需要调整下行参考信号的密度。
步骤S104:根据比较结果确定下行参考信号的调整方法方式。
这里,比较结果可以是需要调整下行参考信号的密度,也可以是不需要调整下行参考信号的密度;其中,需要调整下行参考信号的密度包括降低下行参考信号的密度,或提高下行参考信号的密度。相应地,对下行参考信号的插入格式进行修改,然后再进行数据传递。
若所述比较结果为需要调整下行参考信号,则根据下行信道质量和设定阈值对下行参考信号的密度值进行设置,密度值的设置是以下行参考信号的最低密度为基础,成倍地增加或减小当前的下行参考信号的密度;当所述下行信道质量高于所述设定阈值对应的信道质量上限值时,降低当前下行参考信号的设定密度值;当所述下行信道质量低于所述设定阈值对应的信道质量下限值时,提高当前下行参考信号的设定密度值;
步骤S105:通过指定消息将确定的下行参考信号的调整方式发送到终 端;
在一实施例中,通过指定消息将修改后的下行参考信号的设定密度值发送给终端。
为了避免终端将修改后的下行参考信号的传输数据误认为是错误数据,需要告知终端何时启用修改后的下行参考信号,即启用修改后的下行参考信号的时间。所以,所述指定消息中还携带有所述下行参考信号的设定密度值的启用时间,相应的,所述根据所述比较结果对下行参考信号进行设置包括:根据所述指定消息中所述下行参考信号的设定密度值的启用时间调整发送下行参考信号的密度。
本实施例方法通过检测终端接收数据的误码率,能够及时了解终端接收数据的状况;并根据获得的下行信道质量与设定阈值的比较调整下行参考信号的设置,使得下行参考信号的插入密度发生变化,进而实现对系统频率资源的有效利用。
实施例2
本实施例提供了一种下行参考信号的调整方法,如图2所示,本实施例方法包括:
步骤S201:将接收数据的误码率发送给基站,所述误码率用于基站获取下行信道质量;
这里,终端接收基站发来的数据会因为传输环境的不同出现不同的数据接收错误,通常用数据的误码率来表示,基站通过终端的误码率能够获得下行信道质量。
步骤S202:接收所述基站发来的指定消息,从所述指定消息中解析出下行参考信号的设定密度值,根据所述下行参考信号的设定密度值设定接收数据的格式。
如果基站根据下行信道质量决定对下行参考信号进行调整,那么,基 站就会向终端发送指定消息,指定消息中包含修改后的下行参考信号的设定密度值。
为了避免将下行参考信号修改后的数据误认为是错误数据,还需要对终端接收数据的格式做出相应的调整,因此,基站需要告知终端何时启用修改后的下行参考信号,是将启用时间携带于指定消息中,相应的,终端会根据所述指定消息中携带的所述下行参考信号的设定密度值的启用时间调整接收下行参考信号的密度。
实施例3
本实施例是在实施例1的方法的基础上提出的一种下行参考信号的调整装置,如图3所示,本实施例的装置包括:
误码率监测单元301,配置为获取终端接收数据的误码率;
基站向终端下发数据后,会收到终端发来的相关数据,其中就包括终端接收的数据的误码率,误码率是衡量数据在规定时间内数据传输精确性的指标。通常,误码率=传输中的误码/所传输的总码数×100%。误码率与当前基站和终端的下行参考信号的密度有关,也与当前的网络信号传输环境有关。
下行信道质量获取单元302,配置为根据获得的误码率得到下行信道质量;
这里,误码率能够反映当前基站和终端的下行参考信号的密度是否合适,也能反映当前网络信号传输环境的好坏,因此,根据误码率和下行信道质量的直接相关性,就能通过误码率率得到下行信道质量。
比较单元303,配置为将得到的下行信道质量和设定阈值进行比较得到比较结果;
此处设定阈值是为了反映下行信道的质量情况,预先设置的阈值包括两个,一个是设定阈值对应的信道质量上限值,一个是设定阈值对应的信 道质量下限值;其中,信道质量上限值用来表示当前网络信号传输环境很好,可以降低下行参考信号密度,比如:信道质量上限值可以设为80%;相应地,信道质量下限值表示当前网络信号传输环境不够好,为了保证数据传输质量,减少误码率,可以增加下行参考信号密度,比如:信道质量上限值可以设为50%。
第一下行参考信号设置单元304,配置为根据得到的比较结果对下行参考信号进行设置。
这里,比较结果可以是需要调整下行参考信号的密度,也可以是不需要调整下行参考信号的密度;其中,需要调整下行参考信号的密度包括降低下行参考信号的密度,或提高加下行参考信号的密度。相应地,对下行参考信号的插入格式进行修改,然后再进行数据传递。
所述比较单元303包括:
设置模块,配置为设置所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值;
比较模块,配置为将所述下行信道质量和设定阈值进行比较,若所述下行信道质量高于所述设定阈值对应的信道质量上限值,或所述下行信道质量低于所述设定阈值对应的信道质量下限值时,需要下行参考信号进行调整。
所述第一下行参考信号设置单元304包括:
下行参考信号设置模块,配置为在所述比较结果为需要对下行参考信号进行调整时,根据下行信道质量和设定阈值对下行参考信号的密度值进行设置;当所述下行信道质量高于所述设定阈值对应的信道质量上限值时,则需要降低当前下行参考信号的设定密度值;当所述下行信道质量低于所述设定阈值对应的信道质量下限值时,则需要提高当前下行参考信号的设定密度值;之后,通过指定消息将下行参考信号的设定密度值发送给终端。
若所述下行信道质量处于所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值之间,即:所述下行信道质量不高于所述设定阈值对应的信道质量上限值、也不低于所述设定阈值对应的信道质量下限值,则不需要调整下行参考信号的密度。
为了避免终端把修改后的下行参考信号的传输数据误认为错误数据,需要告知终端何时启用修改后的下行参考信号,即启用修改后的下行参考信号的时间。所述第一下行参考信号设置单元304,还配置为根据所述指定消息中所述下行参考信号的设定密度值的启用时间调整发送下行参考信号的密度。
在实际应用中,本实施例中的误码率监测单元301、下行信道质量获取单元302、比较单元303和第一下行参考信号设置单元304均可由位于基站的中央处理器(CPU)、微处理器(MPU)、数字信号处理器(DSP)、或现场可编程门阵列(FPGA)实现。
实施例4
本实施例是在实施例2的基础上提出的一种下行参考信号的调整装置,如图4所示,本实施例装置包括:
误码率发送单元401,配置为将接收数据的误码率发送给基站,所述误码率用于基站获取下行信道质量;
这里,终端接收基站发来的数据会因为传输环境的不同出现不同的数据接收错误,通常用数据的误码率来表示,基站通过终端的误码率能够获得下行信道质量。
第二下行参考信号设置单元402,配置为接收所述基站发来的指定消息,从所述指定消息中解析出下行参考信号的设定密度值,根据所述下行参考信号的设定密度值设定接收数据的格式。
如果基站根据下行信道质量决定对下行参考信号进行调整,那么基站 就会向终端发送指定消息,指定消息中包含修改后的下行参考信号的设定密度值。为了避免将下行参考信号修改后的数据误认为是错误数据,还需要对终端接收数据的格式做出相应的调整,因此,基站需要告知终端何时启用修改后的下行参考信号,是将启用时间携带于指定消息中。因此,所述第二下行参考信号设置单元402,还配置为根据所述指定消息中携带的所述下行参考信号的设定密度值的启用时间调整接收下行参考信号的密度。
在实际应用中,本实施例中的误码率发送单元401和第二下行参考信号设置单元402均可由位于终端的CPU、MPU、DSP、或FPGA实现。
实施例5
以下通过一个实际场景对本发明实施例进行详细说明。本实施例包括以下步骤:
步骤S501:终端将接收数据的误码率发送给基站,所述误码率用于基站获取下行信道质量;
终端接收基站发来的数据会因为传输环境的不同出现不同的数据接收错误,通常用数据的误码率来表示。基站通过终端的误码率能够获得下行信道质量。
步骤S502:基站获取终端接收数据的误码率,根据获得的所述误码率得到下行信道质量;
误码率是衡量数据在规定时间内数据传输精确性的指标。通常,误码率=传输中的误码/所传输的总码数×100%。误码率与当前基站和终端的下行参考信号的密度有关,也与当前的网络信号传输环境有关。
步骤S503:基站将得到的所述下行信道质量和设定阈值进行比较得到比较结果,根据所述比较结果对下行参考信号进行设置;
此处设定阈值是为了反映下行信道的质量情况,预先设置的阈值包括两个,一个是设定阈值对应的信道质量上限值,一个是设定阈值对应的信 道质量下限值;其中,信道质量上限值用来表示当前网络信号传输环境很好,可以降低下行参考信号密度;相应地,信道质量下限值表示当前网络信号传输环境不够好,为了保证数据传输质量,减少误码率,可以增加下行参考信号密度。相应地对下行参考信号的插入格式进行修改,然后进行数据传递。
将所述下行信道质量和设定阈值进行比较,若所述下行信道质量高于所述设定阈值对应的信道质量上限值,则需要降低下行参考信号的密度;所述下行信道质量低于所述设定阈值对应的信道质量下限值时,则需要提高下行参考信号的密度;若所述下行信道质量处于所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值之间,即:所述下行信道质量不高于所述设定阈值对应的信道质量上限值、也不低于所述设定阈值对应的信道质量下限值,则不需要调整下行参考信号的密度。
这里,比较结果可以是需要调整下行参考信号的密度,也可以是不需要调整下行参考信号的密度;其中,需要调整下行参考信号的密度包括降低下行参考信号的密度,或提高下行参考信号的密度。相应地,对下行参考信号的插入格式进行修改,然后再进行数据传递。
若所述比较结果为需要调整下行参考信号,则根据下行信道质量和设定阈值对下行参考信号的密度值进行设置;当所述下行信道质量高于所述设定阈值对应的信道质量上限值时,降低当前下行参考信号的设定密度值;当所述下行信道质量低于所述设定阈值对应的信道质量下限值时,提高当前下行参考信号的设定密度值;
之后,通过指定消息将修改后的下行参考信号的设定密度值发送给终端。
为了避免终端将修改后的下行参考信号的传输数据误认为是错误数据,需要告知终端何时启用修改后的下行参考信号,即启用修改后的下行 参考信号的时间。所以,所述指定消息中还携带有所述下行参考信号的设定密度值的启用时间,相应的,所述根据所述比较结果对下行参考信号进行设置包括:根据所述指定消息中所述下行参考信号的设定密度值的启用时间调整发送下行参考信号的密度。
步骤S504:终端接收所述基站发来的指定消息,从所述指定消息中解析出下行参考信号的设定密度值,根据所述下行参考信号的设定密度值设定接收数据的格式。
指定消息包括寻呼消息、系统消息和无线资源控制(Radio Resource Control,RRC)重配消息。其中,寻呼消息和系统消息用于通知处于业务中的终端;RRC重配消息用于通知处于业务中的终端。如果基站根据下行信道质量决定对下行参考信号进行调整,那么基站就会向终端发送指定消息,指定消息中包含修改后的下行参考信号的设定密度值。为了避免将下行参考信号修改后的数据误认为错误数据,需要对终端接收数据的格式做出相应的调整。因此,基站需要告知终端何时启用修改后的下行参考信号,是将启用时间携带于指定消息中,相应的,终端会根据所述指定消息中携带的所述下行参考信号的设定密度值的启用时间调整接收下行参考信号的密度。
本实施例主要包括以下优势:
1、在信号质量比较好的环境下减少下行参考信号密度,增加承载用户数据的频率资源。
2、在信号质量比较差的环境下增加下行参考信号密度,提高终端的信道估计性能,降低终端的接收误码率。
本发明实施例中提出的下行参考信号的调整装置中的各单元和模块都可以通过处理器来实现,当然也可通过具体的逻辑电路实现;其中所述处理器可以是移动终端或服务器上的处理器,在实际应用中,处理器可以为 中央处理器(CPU)、微处理器(MPU)、数字信号处理器(DSP)或现场可编程门阵列(FPGA)等。
本发明实施例中,如果以软件功能模块的形式实现上述下行参考信号的调整方法,并作为独立的产品销售或使用时,也可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read Only Memory,ROM)、磁碟或者光盘等各种可以存储程序代码的介质。这样,本发明实施例不限制于任何特定的硬件和软件结合。
相应地,本发明实施例还提供一种计算机存储介质,该计算机存储介质中存储有计算机程序,该计算机程序用于执行本发明实施例图1所述的下行参考信号的调整方法。
本发明实施例还提供一种计算机存储介质,该计算机存储介质中存储有计算机程序,该计算机程序用于执行本发明实施例图2所述的下行参考信号的调整方法
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。

Claims (14)

  1. 一种下行参考信号的调整方法,所述方法包括:
    获取终端接收数据的误码率;
    根据所述误码率得到下行信道质量;
    将所述下行信道质量和设定阈值进行比较,并根据比较结果确定下行参考信号的调整方式;
    通过指定消息将确定的下行参考信号的调整方式发送到终端。
  2. 根据权利要求1所述的方法,其中,所述方法还包括:设置所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值;
    所述将得到的所述下行信道质量和设定阈值进行比较并根据比较结果确定下行参考信号调整方式包括:
    将所述下行信道质量和设定阈值进行比较,若所述下行信道质量高于所述设定阈值对应的信道质量上限值,或所述下行信道质量低于所述设定阈值对应的信道质量下限值时,需要对下行参考信号进行调整。
  3. 根据权利要求2所述的方法,其中,所述方法还包括:
    根据下行信道质量和设定阈值对下行参考信号的密度值进行设置:当所述下行信道质量高于所述设定阈值对应的信道质量上限值时,降低当前下行参考信号的设定密度值;当所述下行信道质量低于所述设定阈值对应的信道质量下限值时,提高当前下行参考信号的设定密度值;
    所述通过指定消息将确定的下行参考信号的调整方式发送到终端包括:通过指定消息将修改后的下行参考信号的设定密度值发送给终端。
  4. 根据权利要求3所述的方法,其中,所述指定消息中还携带有所述下行参考信号的设定密度值的启用时间;
    所述方法还包括:根据所述指定消息中所述下行参考信号的设定密度值的启用时间调整发送下行参考信号的密度。
  5. 一种下行参考信号的调整方法,所述方法包括:
    将接收数据的误码率发送给基站,所述误码率用于基站获取下行信道质量;
    接收所述基站发来的指定消息,从所述指定消息中解析出下行参考信号的设定密度值,根据所述下行参考信号的设定密度值设定接收数据的格式。
  6. 根据权利要求5所述的方法,其中,所述根据所述下行参考信号的设定密度值设定接收数据的格式包括:
    根据所述指定消息中携带的所述下行参考信号的设定密度值的启用时间调整接收下行参考信号的密度。
  7. 一种下行参考信号的调整装置,所述装置包括:
    误码率监测单元,配置为获取终端接收数据的误码率;
    下行信道质量获取单元,配置为根据获得的所述误码率得到下行信道质量;
    比较单元,配置为将得到的所述下行信道质量和设定阈值进行比较;
    第一下行参考信号设置单元,配置为根据比较结果确定下行参考信号的调整方式,并通过指定消息将确定的下行参考信号的调整方式发送到终端。
  8. 根据权利要求7所述的装置,其中,所述比较单元包括:
    设置模块,配置为设置所述设定阈值对应的信道质量上限值和所述设定阈值对应的信道质量下限值;
    比较模块,配置为将所述下行信道质量和设定阈值进行比较,若所述下行信道质量高于所述设定阈值对应的信道质量上限值,或所述下行信道质量低于所述设定阈值对应的信道质量下限值时,需要下行参考信号进行调整。
  9. 根据权利要求7所述的装置,其中,所述第一下行参考信号设置单元包括:
    下行参考信号设置模块,配置为根据下行信道质量和设定阈值对下行参考信号的密度值进行设置:当所述下行信道质量高于所述设定阈值对应的信道质量上限值时,降低当前下行参考信号的设定密度值;当所述下行信道质量低于所述设定阈值对应的信道质量下限值时,提高当前下行参考信号的设定密度值;通过指定消息将修改后的下行参考信号的设定密度值发送给终端。
  10. 根据权利要求9所述的装置,其中,所述第一下行参考信号设置单元,还配置为根据所述指定消息中所述下行参考信号的设定密度值的启用时间调整发送下行参考信号的密度。
  11. 一种下行参考信号的调整装置,所述装置包括:
    误码率发送单元,配置为将接收数据的误码率发送给基站,所述误码率用于基站获取下行信道质量;
    第二下行参考信号设置单元,配置为接收所述基站发来的指定消息,从所述指定消息中解析出下行参考信号的设定密度值,根据所述下行参考信号的设定密度值设定接收数据的格式。
  12. 根据权利要求11所述的装置,其中,所述第二下行参考信号设置单元,还配置为根据所述指定消息中携带的所述下行参考信号的设定密度值的启用时间调整接收下行参考信号的密度。
  13. 一种计算机存储介质,所述计算机存储介质中存储有计算机可执行指令,该计算机可执行指令用于执行权利要求1至4任一项所述的下行参考信号的调整方法。
  14. 一种计算机存储介质,所述计算机存储介质中存储有计算机可执行指令,该计算机可执行指令用于执行权利要求5至6任一项所述的下行 参考信号的调整方法。
PCT/CN2015/083032 2014-12-09 2015-07-01 下行参考信号的调整方法、装置及存储介质 WO2016090905A1 (zh)

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